1.)An operation * is defined on the set R, of real numbers by m*n= -n÷m²+1
where m, n are real numbers. If -3, -10 are real numbers, show
whether or not * is commutative.

b) Given that x*y=2x-y, where x
and y are real numbers, find the value of
i) 5* (4*5)
ii) y if y*(3*)=6.​